Synonym coolness in the Collins English Dictionary & Thesaurus, spelling "coolness"

coolness

1 chilliness, coldness, freshness, nippiness

2 calmness, collectedness, composedness, composure, control, deliberateness, dispassionateness, imperturbability, level-headedness, placidity, placidness, quietness, sedateness, self-control, self-discipline, self-possession

3 aloofness, apathy, distantness, frigidity, frigidness, frostiness, impassiveness, impassivity, incuriosity, incuriousness, indifference, lukewarmness, offhandedness, poise, remoteness, reservedness, standoffishness, uncommunicativeness, unconcernedness, unfriendliness, uninterestedness, unresponsiveness

4 audaciousness, audacity, boldness, brazenness, cheekiness, impertinence, impudence, insolence, presumptuousness, shamelessness

5 (informal) elegance, sophistication, urbanity

Antonyms

1 sunniness, tepidness, warmness

2 agitation, deliriousness, discomposure, disconcertedness, excitedness, impassionedness, nervousness, perturbation, tenseness, twitchiness (informal)

3 affability, amiability, amiableness, chumminess (informal) cordiality, friendliness, geniality, receptiveness, receptivity, responsiveness, sociability, sociableness, warmth